With 102 patents published between 2002 and 2022, Pfizer Inc holds the most number of patents in the Oil & Gas sector in Algeria.
The second largest number of patents were published by Shell plc with 37 related patents. The third largest number of patents were published by GSK plc with 23 related patents. The fourth largest number of patents were published by Exxon Mobil Corp with 21 related patents, of which 57.1% was contributed by its subsidiary Exxon Production Research Company. The fifth largest number of patents were published by GlaxoSmithKline Plc with 21 related patents.
The top five patent holders, i.e., Pfizer Inc, Shell plc, GSK plc, Exxon Mobil Corp, and GlaxoSmithKline Plc, together held 204 patents during the period.
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